Means for actuating ammunition hoists



.H. w. ,LEE mp J. w. SWIND'ALE. MEANS FOR ACTUATING AMMUNITION HOISTS.

APPLICATION FILED APR. 19, I922- INVENTORS:

W. LEE,

J.W.SWINDAIE, By their Patented Sept. 5, 1922.

2 SHEETSSHEET I wad/UM 5 Wneys H. W. LEE AND L W. SWINDALE. MEANS FOR ACTUATING AMMUNITION HOISTS. APPLICATION HLED ml. 19, 1922.

PatentedSept. 5,' 1922.

2 SHEETS-SHEET 2.

INVENTORS: H. W. LEE,

J.W. SWINDALE,

By the irw eys Patented Sept. 5, 1922.

PTENT HUGH WARREN LEE AND JOHN VjINDLOVV SVINDALE, NE'W'CASTLE-UPON-TYNE,

ENGLAND, ASSIGNGRS TO SIR W. G. ARMSTRONG, WHITWORTH AND COMPAN LIMITED, 035 NEWCASTLE-UPON-TYNE, ENGLAND. I

MEANS FOR ACTUATING AMMUNITION HOISTS.

Application filed. April 19, 1922. Serial No. 555,637.

T 0 all to 7mm it may concern Be it known that we, HUeI-I 'WABREN Lnn and JOHN lVINDLow SWINDALE, subjects of the King of Great Britain, residing at Elswick lVorks, Newcastle-upon-Tyne, England, have invented new and useful Improved Means for Actuating Ammunition Hoists, of which the following is a specification.

This invention relates to means for actuating ammunition hoists in which the projectile is caused to ascend a trunk by means of lifting arms pivoted to sliders recipro eating in the trunk, such as are described in our former latent No. 1,392,583.

According to this invention we mount four sprocket wheels on short shafts and we drive the shafts by an electric or other motor, preferably through reduction gearing and toothed wheels. Four chains pass round the sprocket wheels and other sprocket wheels similarly mounted upon other short shafts. The chains are coupled together in pairs by bars each of which is attached at each end to opposite links of adjacent chains. On each bar is mounted a connecting rod whose other end is attached to one of the sliders in the trunk, and on each bar are keyed cam plates having cam grooves extending through which is a roller upon the end of a rod whose other end can slide in a slot in its corresponding connecting rod. Each rod is connected by a link to one or other of the actuating rods in the trunk by which the lifting arms are turned upon their pivots.

The sliders in the trunk are reciprocated distance approximately equal to half the length of the chains whilst the cam grooves cause the rods to slide in the slots in the connecting rods when the bars connecting the chains are passing round the sprocket wheels at either end of the stroke and to turn the lifting arms upon their pivots.

Sets of arms are pivoted to each slider, and both sets have reciprocating movements up and down the trunk of the hoist and rocking movments into and out of the path of the projectiles. When one set of arms carries the projectiles up the trunk the other set descends, the latter arms having been positively rocked out of the path of the projectiles. Then the latter arms have passed the projectiles they are rocked back and start to ascend and move the projectiles up the trunk while the first mentioned arms descend, having been rocked out of the path of the projectiles. The sliders are reciprocated in opposite directions and the sets of arms are rocked'by other slidduction gearing a shaft 6 mounted in bearings carried by a bracket 0 on the side of the trunk (Z ofthe hoist. Upon the shaft 6 are three toothed wheels 6 in mesh with three other toothed wheels 7 on three short shafts g mounted in hearings on the bracket 0. Upon the shafts g are also mounted four sprocket wheels y. In bearings at the lower end on the bracket 0 are also mounted three other short shafts Z upon which are mounted four sprocket wheels m Four chains n are mounted on four pairs of sprocket wheels j and 722-. The chains 92 are coupled together in palrs each pair being coupled to a bar 0 by angle couplings 10 (see Figure t), the coupl ngs being so arranged that when one coupling is passingthe sprocket wheels j the other coupling is passing the sprocket wheels on. The ends of two connecting rods 9 are pivoted on each of the bars 0, the other ends being pivoted to sliders a" in the trunk; to each bar 0 is keyed a pair of plates it having cam grooves a (see Figures 3 and 4) running in which are rollers t on one end of a rod to which is slotted to engage the bar 0. The other ends of the rods a can slide in slots 0 in the corresponding connecting rods The rods a are connected by links 20 to other rods 09 on the sliders 7- in which rods are recesses y engaging with teeth on lifting arms 2 pivoted to the sliders 1".

By the movement of the chains a one slider 1' is raised whilst the other is lowered and at the end of the reciprocating movement of the sliders a" the arms a on the sliders r are turned out of the path of the projectile in the trunk d by the reciprocating rods w.

What we claim is 1. An ammunition hoist, a slider in the hoist, a lifting arm pivoted to the slider, means for rocking the lifting arm onits pivot, sprocket wheels, two endless chains on the sprocket wheels, means for driving the sprocket wheels, a bar coupled to the chains and a rod pivotally connected to the bar and the slider.

2, An ammunition hoist, a slider in the hoist, a lifting arm pivoted to the slider, sprocket wheels, two endless chains on the sprocket wheels, means for driving the sprocket wheels, a bar coupled to the chains, a rod connecting the bar to the slider, a second rod adapted to rock the lifting arm, a cam mounted on the bar and a third rod connected to the second rod and actuated by the cam.

3. An ammunition hoist, two sliders in the hoist, a lifting arm pivoted to each slider, eight sprocket wheels, four endless chains each running on two sprocket wheels, means for driving the sprocket wheels, two bars, one coupled to each pair of chains, two rods connecting each bar to its corresponding slider, second rods adapted to rock the lifting arms, two cams mounted on each bar and third rods connected to the second rods and actuated by the cams.

,4. An ammunition hoist, two sliders in the hoist, a lifting arm pivoted to each slider, eight sprocket wheels, four endless chains each running on two sprocket wheels, three shafts on which four of the sprocket wheels are mounted, toothed wheels on the three shafts, other toothed wheels on another shaft, means for driving this shaft, two bars, one coupled to each pair of chains, two rods connecting each bar to its corresponding slider, second rods adapted to rock the liftin g arms, two cams mounted on each bar and third rods connected to the second rods and actuated by the cams.

5. An ammunition hoist, a slider in the hoist, a lifting arm pivoted to the slider, sprocket wheels, two endless chainson the sprocket wheels, means for driving the sprocket wheels, a bar coupled to the chains, a rod connecting the bar to the slider, a second rod adapted to rock the lifting arm, a cam mounted on the ha r, a third rod actuated by the cam and having one end sliding in a slot in the first rod and a link connecting this end to the second rod.

In. testimony that we claim the foregoing as our invention we have signed our names this 2nd day of March, 1922.

HUGH VVARREN LEE, JOHN WINDLOW SWINDALE. 

